Moon Phases Calendar January 2021

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Interactive moon phases tool

Ready to explore other moon phases? This tool shows the current moon phase and allows you to shift the phases and see how the moon is illuminated at each phase.

Credit: NASA

«January 2021»
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
right
Friday, January 1st, 2021
Waning Gibbous
2
right
Saturday, January 2nd, 2021
Waning Gibbous
3
right
Sunday, January 3rd, 2021
Waning Gibbous
4
right
Monday, January 4th, 2021
Waning Gibbous
5
right
Tuesday, January 5th, 2021
Waning Gibbous
6
right
Wednesday, January 6th, 2021
Last Quarter
7
right
Thursday, January 7th, 2021
Last Quarter
8
left
right
Friday, January 8th, 2021
Waning Cresent
9
left
right
Saturday, January 9th, 2021
Waning Cresent
10
left
right
Sunday, January 10th, 2021
Waning Cresent
11
left
right
Monday, January 11th, 2021
Waning Cresent
12
left
right
Tuesday, January 12th, 2021
Waning Cresent
13
left
right
Wednesday, January 13th, 2021
New Moon
14
left
right
Thursday, January 14th, 2021
New Moon
15
left
right
Friday, January 15th, 2021
Waxing Cresent
16
left
right
Saturday, January 16th, 2021
Waxing Cresent
17
left
right
Sunday, January 17th, 2021
Waxing Cresent
18
left
right
Monday, January 18th, 2021
Waxing Cresent
19
left
right
Tuesday, January 19th, 2021
Waxing Cresent
20
right
Wednesday, January 20th, 2021
First Quarter
21
right
Thursday, January 21st, 2021
First Quarter
22
right
Friday, January 22nd, 2021
Waxing Gibbous
23
right
Saturday, January 23rd, 2021
Waxing Gibbous
24
right
Sunday, January 24th, 2021
Waxing Gibbous
25
right
Monday, January 25th, 2021
Waxing Gibbous
26
right
Tuesday, January 26th, 2021
Waxing Gibbous
27
right
Wednesday, January 27th, 2021
Waxing Gibbous
28
Thursday, January 28th, 2021
Full Moon
29
right
Friday, January 29th, 2021
Waning Gibbous
30
right
Saturday, January 30th, 2021
Waning Gibbous
31
right
Sunday, January 31st, 2021
Waning Gibbous
Moon phase image

Moon phases software screen saver.

If you are interested in the phases of the moon or you like night sky screensavers, download the StarMessage screensaver for Microsoft Windows and Apple MacOS (including Mojave and Catalina).
The screensaver displays the moon in its current moon phase, reminds you about the upcoming full moon dates, shows you the names of the full moon, and does much more.

 

Download It's free

 

Diagram explaining the moon phases

This diagram shows the relative positions of the Sun, the Moon and earth and explains how the different moon phases appear.

The visible part of the moon is the part of the moon's surface that gets hit by the sunlight. The rest of the moon disc is almost invisible.

The moon phases are not caused by the shadow of the earth on to the moon. It is the moon's own shadow at the part of its surface that is not hit by the sunlight.

In other words, the visible "sunny" part is made of the places where there is "day" on the moon and the shadow part is where there is "night".

Moon phases diagram explained. Sun, Earth, Moon

Credit: NASA/JPL-Caltech.